Each teacher creates a padlet wall for his class.

https://it.padlet.com/

Each student has to put own physical and moral description on this padlet wall.

They can write just name, without surname.

Each class takes a picture and load it in a page, without write names.

On the class picture, we put a number on each student.

We can use this tool: https://www.thinglink.com/

We make teams. In each team, we put some students from each nationality.

Then we create topics on the forum for each team. And in the forum, they will have to interact with each other to find out who is who.

We will make a page in TwinSpace to each teacher put the name of students in teams.

At the end, each class put the right picture on padlet wall and write "name=number" to conclude the task.